A wolf moved to Isle Royale National Park last fall in a bid to boost the island's predators took advantage of an ice bridge tying the island to the mainland and set off toward Minnesota where she had been captured.

“I was excited to see locations after not seeing anything for five days, but that excitement quickly gave way to disappointment as my eyes followed the track that led away from Isle Royale. I knew this could happen but of course you always hope for the best," Mark Romanski, the park's chief of resources, said Wednesday.